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Vitamins
Vitamin D3 (Cholecalciferol)
Hormone precursor regulating calcium absorption, immune modulation, gene expression via VDR activation
Gabriel Score
95/ 100Excellent
CategoryVitamins
Applications6 conditions
FormsCholecalciferol (D3), ergocalciferol (D2, less effective)
How it works
Hormone precursor regulating calcium absorption, immune modulation, gene expression via VDR activation
Typical Dosage
2000-5000 IU/day (maintenance), 10000 IU/day (deficiency correction)
Used for
OsteoporosisRicketsImmune deficiencyDepressionAutoimmune diseaseCancer prevention
Practical Guide
Available Forms
Cholecalciferol (D3), ergocalciferol (D2, less effective)
Natural Food Sources
- •Fatty fish
- •Egg yolks
- •Fortified dairy
- •Sunlight (UVB)
Dosing should be individualized. Consult a qualified healthcare practitioner.
The Science
Evidence Base
Excellent95/100
Must pair with K2 to prevent arterial calcification; test levels (target 50-80 ng/mL); fat-soluble—take with meals
Works Well With
Vitamin K2 (critical)MagnesiumVitamin ABoron
Safety Profile
Interactions
- May increase digoxin toxicity
- Enhances calcium absorption
Contraindications
- Hypercalcemia
- Sarcoidosis
- Hyperparathyroidism
Trusted Brands
ThornePure EncapsulationsDesigns for HealthNOW
Build Your Protocol
Work with a practitioner to design a personalized supplement protocol.
Find a PractitionerCategoryVitamins
Applications6
Gabriel Score95/100
Educational purposes only. Consult a qualified healthcare provider before starting any supplement protocol.